JP4570428B2 - Protective headgear system - Google Patents

Abstract

This invention is directed to a protective headgear system which includes a relatively light weight, substantially rigid, headgear structure which may include an internal, adjustable headband. A fan mechanism is mounted on the headgear structure. A power supply selectively powers the fan. The system includes filter means which is attachable to the headgear structure to cover the structure. A facial shield is attachable to the headgear structure to cover the face of the wearer to maintain non-contaminating conditions relative to the wearer. A shield protector is attachable to the facial shield. A flexible cuff is attachable to the facial shield to enclose the lower opening of the lens and provide protection for the wearer.

Description

  The present invention is generally directed to a personal environment protection system, and more particularly to a headgear structure worn by an individual in an environment requiring control of filtered air and protection from particulate material. .

  There are several types of airflow, filtration and protection systems known in the art. Several types of such systems are currently marketed for use in surgical settings, for use in “clean room” environments, or for use in hazardous / contaminated environments.

  Some existing systems include hoods, gowns, filters, and the like. In some cases, an air filter is built into the helmet structure, resulting in a cumbersome and cumbersome headgear unit. Known units often include an external source of air, such as a gas cylinder, air line, etc., which are connected to the helmet structure by tubes, hoses and the like. Hose-connected systems and long gowns or hoods are very cumbersome and tend to limit wearer movement and flexibility during certain procedures.

  In many systems known in the art, hoods and / or gowns are used as filtration devices and these must be replaced frequently. This structure therefore tends to be expensive because disposable filtration devices are quite expensive.

  Furthermore, these systems tend to be quite expensive, especially with respect to the disposable parts of the system.

Many such products are known in the prior art. One preferred and functional system is RO Bare et al.'S "Personal Air Filtration and Control System".
U.S. Pat. No. 5,054,480 entitled "CONTROL SYSTEM") ".

  Another such system is described in US Pat. No. 5,711,033 entitled “AIR FILTRATION AND CONTROL SYSTEM INCLUDING HEADGEAR” by LJ Green et al. Yes.

SUMMARY OF THE INVENTION The present invention is directed to a protective headgear system worn by surgeons during a surgical procedure, technicians during the assembly process, workers handling toxic waste, and the like.

  The system includes a relatively lightweight and substantially rigid headgear structure. Typically, a blower mechanism is attached to the headgear structure. A suitable power source such as a battery pack may be used to selectively supply power to the blower.

  The system also includes a removable and disposable filter that is adapted to be easily and snugly attached to the headgear structure to largely cover the outer surface of the headgear structure. Any other pre-filter may be provided for mounting on a disposable filter.

  A transparent face shield (or lens) is adapted to be easily worn on the headgear structure to cover the wearer's face in order to maintain a sterile and uncontaminated state for the wearer. An optional lens cover may be attached to the face shield to protect the shield from wear caused by cleaning.

  Flexible and closable cuff fits easily on the lower edge of the face shield to surround the lower projection of the lens and provide a seal around the wearer's head Is done.

  An adjustable headband is attached to the headgear structure to support the assembled structure on the wearer's head.

DESCRIPTION OF PREFERRED EMBODIMENTS Referring to all of the drawings simultaneously, one embodiment of a helmet assembly 10 of the present invention is shown. The helmet assembly 10 includes a helmet shell 100, a blower mechanism 108, an outer filter (or pre-filter) 500, an inner or main filter 400, a face shield 200, a lens protector 225, a fold 300, and a headband 175. An exploded view of the assembly 10 is shown in FIG.

  Helmet shell 100 (see FIGS. 1 and 5) is typically formed from a lightweight material such as, for example, PETG or polycarbonate. Helmet shell 100 is generally configured to follow the shape of the upper portion of the wearer's head, as will be described below, but is spaced from the top of the wearer's head by headband 175.

  Further, as described below, the helmet shell 100 is sufficiently sturdy to support a cooling or air feed mechanism 108 such as, for example, a blower.

  A plurality of radial fins 103 extend upward from the outer surface of the helmet shell 100 and radially extend outward from the longitudinal center of the helmet shell 100 toward the outer periphery thereof. The central fin 102 extends upward from the outer surface of the helmet shell 100 at the longitudinal center of the helmet shell 100. The radial fins 103 may be integrated with the central fin 102, but this configuration is not necessary.

The fan cover 101 (see FIG. 5) extends above the outer surface of the helmet shell 100. The fan cover 101 is joined to or formed integrally with the central fin 102 and is conventional as described, for example, in US Pat. Nos. D 460,584 and 6,792,944. Providing a protective and contoured cover for various types of blowers 108. The fan cover 101 provides a spacer for maintaining a distance between the helmet shell 100 and the filter 400. The fan opening 109 is provided through a portion on the fan cover 101 side.

  The fan cover 101 and the fins 102 and 103 serve to support the protective filter 400 above the helmet shell 100. Thus, airflow channels can be defined and maintained around the helmet assembly 10 so that the blower mechanism 108 can provide a cooled and filtered airflow to the wearer of the helmet assembly 10. . The exploded view of FIG. 5 clearly illustrates the components of the helmet assembly.

  A suitable socket 181 on each side of the helmet shell 100 and a suitable socket 171 on each side of the headband 175 accepts a connector 180, such as a pan-head screw, as described below, to place the headband 175 into the helmet shell. Provided to fix.

  The mounting pin 160 is attached to the front portion of the helmet shell 100. A mounting pin 160 is provided for receiving and positioning the face shield (or lens) 200 as described below.

Light emitting diodes (LEDs) 151 and 152, or similar display devices, are attached to the front of helmet shell 100. These diodes are arranged so that they can be easily observed by the wearer of the helmet assembly 10 without obstructing the field of view or otherwise distracting the wearer. The LEDs 151 and 152 are preferably different colors such as red or yellow, respectively. One diode serves to selectively indicate a low battery power state, and the other diode serves to selectively indicate a state of reduced airflow. Diodes 151 and 152 are connected to a control circuit (as described in the aforementioned US Pat. No. 6,792,944 ) by a conductor (not shown) disposed on the inner surface of helmet shell 100.

  A filter 400 made of an electrostatically charged fibrous plastic material (meltblown polypropylene) is configured to conform to the outer shape of the helmet shell 100 and is adapted to fit snugly therewith. By selecting the material of the filter 400, the level or degree of filtration of air entering and exiting the helmet shell 100 can be controlled.

  A rear pocket 401 (see FIG. 4) of the filter 400 receives the rear end of the helmet shell 100. The front edge 402 of the filter 400 is secured to the helmet shell 100 using a suitable fastener, such as Velcro. Further, the filter 400 includes an aperture 403 through which mounting pins 160 extend to position the filter 400. As will be described below, the upper edge of the lens 200 fastens the outer periphery of the main filter 400 to the helmet shell 100.

  If desired, an optional prefilter 500 (see FIGS. 1 and 5) may be provided. Prefilter 500 may be made of the same material as filter 400 if desired. Alternatively, to obtain different filtration characteristics (or to reduce costs), the prefilter 500 may be made of a material such as felt or open cell foam that is different from the material of the filter 400. Of course, the pre-filter 500 may be omitted if desired.

  The prefilter 500 is attached to the helmet shell 100 in the same manner as the filter 400, except that the prefilter 500 is positioned on the upper edge of the lens 200. For example, the aperture 503 engages the pin 160 and the pocket wraps around the rear end of the helmet shell 100.

Facial lens 200 made of an impermeable transparent material such as polycarbonate is adapted to be attached to the outer surface of helmet shell 100. The lens 200 includes a sealing gasket 202 attached to a substantially linear edge above it. The gasket 202 is made of closed cell foam or other compressible material and is adapted to be carried on the outer surface of the filter 400, which is carried on the outer surface of the helmet shell 100, thereby defining the outer periphery of the filter 400. Stay in position. The proximity of the inner surface of the filter 400 and the outer surface of the helmet shell 100 provides a hermetic seal between the inner surface of the lens 200 and the outer surface of the helmet shell 100 and between the inner surface of the filter 400 and the outer surface of the helmet shell 100.

  In one embodiment, the shield 200 (also referred to as the lens 200) is made of a single planar component that is adapted to bend and conform to the shape of the helmet shell 100. In this case, a suitable locking device 203 (see FIGS. 3 and 5) is provided to interconnect the ends of the lens 200 when the lens is assembled around the helmet shell 100. In one example, the locking device 203 may include a pair of retention tabs 204A and 204B and a snap connector 205. Tabs 204A and 204B are held by the user when the shield is attached to helmet shell 100 to facilitate engagement of snap connection 204. Other locking techniques are also contemplated.

  The positioning aperture 230 is provided in the center of the shield 200 adjacent to the upper edge of the shield 200. As described above, the aperture 230 is positioned on the mounting pin 160 of the helmet shell 100 and positions the shield 200 with respect to the helmet shell 100.

  Further, one side of the fastener 206, ie, the fastener side 206A (see FIG. 5), is attached to the lower curved edge of the lens 200 for attachment of the fold 300, as will be described below. The other side of the fastener 206, ie, the fastener side 206B, is attached to the outer edge of the turn 300 as will be described below. The fastener side 206B is adapted to be selectively connected to the fastener side 206A in a conventional manner, thereby providing a wrap 300 to the lens 200 that is adapted to be attached to the helmet shell 100 as described above. Installing.

  The fold 300 is made of a sheet of flexible material such as rayon or plastic or meltblown polypropylene. This material is typically breathable and acts as a filter for ambient air adjacent to the wearer's head. The wrap also serves as a protective barrier to prevent particulate material from entering and exiting between the wearer and the surroundings.

  The fold 300 includes an opening 305 designed to pass over the wearer's head. In the preferred embodiment, an elastic band 302 is attached to the periphery of the opening 305. The elastic band 302 can extend over the wearer's head and then contract to form a moderate fit by comfortably fitting the fold 300 around the wearer's neck. . Alternatively, the head opening 305 may be contracted using a string or drawstring or other securing means. The wrap 300 therefore provides a protective barrier against the wearer's head.

  In an alternative embodiment, it is contemplated that filter 400, face shield 200 and protective wrap 300 may be joined together and located on helmet shell 100 to provide the filtering and protection functions described.

  The optional lens protector 225 is typically made of a thin film of polyester. The lens protector 225 is generally formed with a linear upper edge and a curved lower edge. The attachment hole 226 is formed at the end of the arcuate protector, and the positioning hole 227 is formed in the middle of the protector 225 adjacent to the upper edge of the protector 225.

The positioning hole 227 is disposed on the face shield 200 so as to engage with the mounting pin 160. The mounting hole 226 is arranged to interact with a mounting post 210 attached to the outer surface of the face shield 200. Accordingly, the protector 225 can be selectively attached to the helmet assembly to prevent wear of the lens 200 that can be caused by wiping or cleaning. That is, the protector 225 can be positioned so that it contacts the outer surface for protection of the shield 200, can be removed when appropriate, and replaced if necessary.

  The headband 175 is used to install the helmet 10 on the wearer's head (not shown). Headband 175 is fairly conventional and optional. That is, a different head engagement support mechanism may be used or omitted if desired.

  The headband 175 includes a band 176 (see FIGS. 3 and 5) surrounding the head that can be adjusted to comfortably fit the size of the individual wearer's head. An adjustment latch 177 allows the band 176 to be shortened or lengthened in a conventional manner.

  An overhead strap 178 (see FIGS. 3 and 5) is attached to the band 176 in a conventional manner. Band 176 and strap 178 may be integrally formed if desired. The strap and band are formed of a suitable material such as nylon, for example. Although adjustment of the length of the band 178 is contemplated, this is not essentially a required feature of the invention.

  Headband 176 includes a suitable mounting arm 179 (see FIG. 5) that extends outwardly from headband 176. The arm 179 is provided for attachment to the helmet 100 by a suitable fastener 180, which can be a pan screw or the like, as described above.

  In operation, the components shown in the exploded view of FIG. 5 are assembled as described herein. The assembled headgear structure is positioned on the wearer's head by passing the fold 300 over the user's head. The headgear structure is put in place by adjusting the headband 175. The headgear structure is now ready for use by the wearer receiving air filtered through the filter. The filtered air is directed to the enclosed space created by the filter, helmet shield and wrap. This creates a clean air environment near the wearer's face.

  Thus, a unique design and concept of a headgear system including an air filtration and control system is shown and described. While this description is directed to certain specific embodiments, it will be understood by those skilled in the art that modifications and / or variations of the specific embodiments shown and described herein will occur. Such modifications or variations that are within the scope of this description are also intended to be included therein. This description is exemplary only and is not intended to be limiting. The scope of the invention described herein is limited only by the claims.

1 is a front perspective view of one embodiment of an assembled helmet system of the present invention. FIG. 1 is a rear perspective view of one embodiment of an assembled helmet system of the present invention. FIG. 1 is a lower rear perspective view of one embodiment of an assembled helmet system of the present invention. FIG. FIG. 6 is a lower front perspective view of a partially assembled helmet system showing a main filter attached to a helmet shell. FIG. 4 is an exploded view of the embodiment of the headgear structure of the present invention shown in FIGS. 1, 2, and 3.

Explanation of symbols

  10 helmet assembly, 100 helmet shell, 200 face shield, 400 inner or main filter, 500 outer filter (or pre-filter).

Claims (20)

A protective headgear system,
Helmet shell ,
A face shield adapted to be attached to the helmet shell by placing a face shield around the helmet shell ;
A main filter adapted to the mounted on the top of the helmet shell, and is fixed by there to the face shield covers the outer surface of the protective headgear system,
And a wrapping of Ru formed a seal around the head of the adapted to be attached to the lower part of the face shield wearer protection headgear system. The protective headgear system of claim 1, comprising a pre-filter adapted to cover the main filter . The protective headgear system of claim 1, comprising a lens protector adapted to be attached to the face shield. The protective headgear system of claim 1, comprising a headband adapted to be worn within the helmet shell . The protective headgear system of claim 1, wherein the helmet shell includes at least one support means for supporting the main filter . The face shield is attached to an upper edge thereof, and sealing means for providing a hermetic seal between the inner surface of the face shield and the outer surface of the helmet shell, and between the inner surface of the main filter and the outer surface of the helmet shell. The protective headgear system of claim 1, comprising: The protective headgear system of claim 1, wherein the fold includes an opening formed in a central portion thereof . 8. A protective headgear system according to claim 7 , wherein the fold includes adjustable closure means for substantially closing the opening . 9. A protective headgear system according to claim 8 , wherein the adjustable closure means includes an elastic element around at least a portion of the opening . The protective headgear system of claim 3, wherein the lens protector is selectively removable from the face shield. The protective headgear system of claim 1, wherein the fold is attached to the face shield below the helmet shell . 2. A protective headgear system according to claim 1, comprising fastener means for connecting the wrap to the bottom edge of the face shield. A protective headgear system,
Helmet shell ,
A face shield adapted to be worn on the helmet shell , the face shield being attached to an upper edge thereof to provide a hermetic seal between the inner face of the face shield and the outer face of the helmet shell The protective headgear system further comprises:
A main filter adapted to be mounted on top of the helmet shell, the main filter being secured to the helmet shell by the face shield, and the protective headgear system further comprising:
A fold adapted to be attached to the face shield;
A pre-filter adapted to cover the main filter ;
A protective headgear system comprising: a lens protector adapted to be attached to the face shield. The protective headgear system of claim 13 , wherein the wrapping follows the shape of the face shield. The protective headgear system of claim 13 , wherein the pre-filter follows the shape of the main filter . 14. A protective headgear system according to claim 13 , comprising support means on the helmet shell for separating the main filter from the helmet shell . The protective headgear system according to claim 13 , comprising air blowing means attached to the helmet shell below the main filter . The protective headgear system of claim 3, wherein the face shield and the lens protector are substantially transparent to light. The protective headgear system of claim 1, wherein the fold is made of a flexible breathable material that substantially prevents permeation of particulate material. A mounting pin extending from the helmet shell;
The protective headgear system according to claim 1 or 13, comprising a positioning aperture provided on the face shield and accommodating the mounting pin.

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